/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.hadoop.hdfs.server.protocol;

/**
 * Utilization report for a Datanode storage
 */
public class StorageReport {
    private final DatanodeStorage storage;
    private final boolean failed;
    // 总的磁盘空间
    private final long capacity;
    // 已经使用了多少G的磁盘空间
    private final long dfsUsed;
    // 还剩下多少磁盘空间
    private final long remaining;
    // 已经使用了多少磁盘空间
    private final long blockPoolUsed;

    public static final StorageReport[] EMPTY_ARRAY = {};

    public StorageReport(DatanodeStorage storage, boolean failed,
                         long capacity, long dfsUsed, long remaining, long bpUsed) {
        this.storage = storage;
        this.failed = failed;
        this.capacity = capacity;
        this.dfsUsed = dfsUsed;
        this.remaining = remaining;
        this.blockPoolUsed = bpUsed;
    }

    public DatanodeStorage getStorage() {
        return storage;
    }

    public boolean isFailed() {
        return failed;
    }

    public long getCapacity() {
        return capacity;
    }

    public long getDfsUsed() {
        return dfsUsed;
    }

    public long getRemaining() {
        return remaining;
    }

    public long getBlockPoolUsed() {
        return blockPoolUsed;
    }
}
